New to UE and 2 questions

Hu guys, as said i’m new to UE and here are my questions. If there’s someone who can help me.
Ok, so…
Question 1 : I have made some basic scene in 3ds Max with v-ray materials and Evermotion models.
Why some materials are imported and some not. For example lemon, next to knife. Also, why lemon is floating while it’s on wooden board in 3ds Max? That’s 2 question.https://ibb.co/0yPt9PS
Question 2 : How to get rid of that glare from picture, or how to reduce it?
glare